Action of 15 August 1917

Action of 15 August 1917
Part of World War I
Date15 August 1917
Location52°57′00″N 2°25′00″E / 52.950000°N 2.416670°E / 52.950000; 2.416670
Result Two British ships sunk
Belligerents
 Royal Navy  Imperial German Navy
Commanders and leaders
United Kingdom Thomas Crisp 
United Kingdom William “Johnsey” Manning (MIA)
German Empire (possibly Kpt. Karsten von Heydebreck)
Strength
2 armed smacks 1 U-boat (possibly SM UC-63)
Casualties and losses
1 killed,
7 missing
2 ships sunk
unknown

The action of 15 August 1917 was a naval engagement which occurred during the First World War. The action was fought between a German U-boat (believed to be SM UC-63) and two naval trawlers, Nelson and Ethel & Millie, in the North Sea.